Sealy Mattresses

Sealy Mattresses at MattressOnline. Go to sleep faster, stay asleep longer Expert quality for the perfect night's sleep: our huge range of Sealy mattresses offer you luxury comfort and unrivalled support for a sleep experience like no other! Choose from Posturepedic pocket springs, PostureTech spring systems, memory foam, latex or orthopaedic mattresses for enhanced care for your back. With up to 65% off, many are kept in stock and are available for Free Next Day Delivery - look out for selected mattresses that benefit from a Free Two Man Delivery Upgrade to the room of your choice! Are you looking for a complete mattress and divan bed set? We offer a beautifully designed collection of Sealy Divan Beds too!
Showing products 1-10 of 29
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  • Single

    3′ x 6′3″
    £249.95
    Next Day
  • Small Double

    4′ x 6′3″
    £319.95
    Next Day
  • Double

    4′6″ x 6′3″
    £319.95
    Next Day
  • King Size

    5′ x 6′6″
    £364.95
    Next Day
  • Superking

    6′ x 6′6″
    £429.95
    Next Day
  • Superking Zip and Link

    6′ x 6′6″
    £429.95
    14-21 Days
Up to 55% off
Sealy Posturepedic Aspen Mattress
  • Single

    3′ x 6′3″
    £159.95
    Next Day
  • Small Double

    4′ x 6′3″
    £199.95
    Next Day
  • Double

    4′6″ x 6′3″
    £199.95
    Next Day
  • King Size

    5′ x 6′6″
    £239.95
    Next Day
  • Superking

    6′ x 6′6″
    £334.95
    Next Day
  • Single

    3′ x 6′3″
    £239.95
    Next Day
  • Small Double

    4′ x 6′3″
    £319.95
    Next Day
  • Double

    4′6″ x 6′3″
    £319.95
    Next Day
  • King Size

    5′ x 6′6″
    £359.95
    Next Day
  • Superking

    6′ x 6′6″
    £464.95
    Next Day
  • Superking Zip and Link

    6′ x 6′6″
    £464.95
    14-21 Days
  • Single

    3′ x 6′3″
    £369.95
    Next Day
  • Small Double

    4′ x 6′3″
    £424.95
    Next Day
  • Double

    4′6″ x 6′3″
    £424.95
    Next Day
  • King Size

    5′ x 6′6″
    £479.95
    Next Day
  • Superking

    6′ x 6′6″
    £624.95
    Next Day
  • Superking Zip and Link

    6′ x 6′6″
    £624.95
    14-21 Days
  • Single

    3′ x 6′3″
    £449.95
    Next Day
  • Double

    4′6″ x 6′3″
    £599.95
    Next Day
  • King Size

    5′ x 6′6″
    £699.95
    Next Day
  • Superking

    6′ x 6′6″
    £799.95
    Next Day
  • Superking Zip and Link

    6′ x 6′6″
    £799.95
    3-4 Weeks
  • Single

    3′ x 6′3″
    £209.95
    Next Day
  • Small Double

    4′ x 6′3″
    £234.95
    14-21 Days
  • Double

    4′6″ x 6′3″
    £234.95
    Next Day
  • King Size

    5′ x 6′6″
    £264.95
    Next Day
  • Superking

    6′ x 6′6″
    £349.95
    Next Day
  • Superking Zip and Link

    6′ x 6′6″
    £349.95
    14-21 Days
  • Single

    3′ x 6′3″
    £289.95
    Next Day
  • Small Double

    4′ x 6′3″
    £344.95
    Next Day
  • Double

    4′6″ x 6′3″
    £344.95
    Next Day
  • King Size

    5′ x 6′6″
    £404.95
    Next Day
  • Superking

    6′ x 6′6″
    £529.95
    Next Day
  • Superking Zip and Link

    6′ x 6′6″
    £529.95
    14-21 Days
  • Single

    3′ x 6′3″
    £234.95
    Next Day
  • Small Double

    4′ x 6′3″
    £274.95
    Next Day
  • Double

    4′6″ x 6′3″
    £274.95
    Next Day
  • King Size

    5′ x 6′6″
    £319.95
    Next Day
  • Superking

    6′ x 6′6″
    £439.95
    Next Day
  • Single

    3′ x 6′3″
    £259.95
    Next Day
  • Small Double

    4′ x 6′3″
    £324.95
    Next Day
  • Double

    4′6″ x 6′3″
    £324.95
    Next Day
  • King Size

    5′ x 6′6″
    £409.95
    Next Day
  • Superking

    6′ x 6′6″
    £499.95
    Next Day
  • Superking Zip and Link

    6′ x 6′6″
    £499.95
    14-21 Days
Up to 25% off
Sealy Optimum Firm Mattress
  • Double

    4′6″ x 6′3″
    £874.95
    Next Day
  • King Size

    5′ x 6′6″
    £979.95
    Next Day
  • Superking

    6′ x 6′6″
    £1,224.95
    Next Day
Showing products 1-10 of 29
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